Breakthrough Curves of Hydrogen Isotopes in Inert Gas and Desorption Characteristics in Zirconium Particle Packed Bed

Nobuo Mitsuishi, Satoshi Fukada, Toyoki Yuki, Katsuya Kuroiwa

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The selective absorption and recovery of hydrogen isotopes in an inert gas at 400°C, and their desorption at 800°C have been experimentally investigated by use of a zirconium particle packed bed. The gases used are H2-Ar, D2-Ar and H2-D2-Ar mixtures. The absorption rates of the hydrogen isotopes are confirmed to be fast enough so that this absorption method can be used as a hydrogen recovery process in the fuel cycle of a fusion reactor. The length of the absorption zone for D2 in the zirconium bed is about twice as long as that for H2. For the breakthrough of hydrogen isotopes in the H2-D2-Ar mixture, the hydrogen isotopes flow out in the sequence of D2, HD and H2. The major reason is believed to be that the absorption rate and the solubility of hydrogen are greater than those of D2. In the case of desorption process of the hydrogen isotopes, Fick's law diffusion equation in a zircorium particle can describe the experimental results fairly well.

Original languageEnglish
Pages (from-to)457-464
Number of pages8
JournalJournal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan
Issue number5
Publication statusPublished - Jan 1 1985


All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering

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